What doth a remake make?

Aha: as I suspected, "The Manchurian Candidate" is based on a novel (by Richard Condon, published in 1959). So Movie #2 is just Adaptation #2 of the book, not a remake of Movie #1. (I firmly believe that just because there are two movies based on the same novel (play, short story, epic poem) doesn't mean the second one is a remake; not of the first movie, anyway. You never hear about remakes of "Hamlet," do you?)